Omron CQM1H-CLK21 - Manual (Page 356)

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Adding Nodes Using a Repeater Unit Section 10-1
10-1-2 Procedure for Adding Nodes
10-1-3 Precautions when Connecting Nodes Using a Repeater Unit
When data links are active in the existing network, check the following items
before adding nodes to the network. If the inappropriate data link tables or
parameters are set, the system may not operate properly.
• If the new node will participate in user-set data links, make sure that the
appropriate data link tables are set in the corresponding nodes.
• If the new node will not participate in user-set data links, make sure that
the data link tables of the corresponding nodes are deleted.
Setting the
Repeater Unit
Setting the
additional
nodes
Connecting
and checking
the cables
Check the operating
conditions and setting
status of the existing
network.
Set the baud rate and
terminating resistance
switch on the
Repeater Unit.
(1) Number of nodes registered in network and
node addresses
(2) Baud rate setting
(3) CS1W-RPT01 Repeater Unit connection
(4) Data link mode when data links are
active/inactive
(5) Wired Network 62 Node Enable Bit setting in
the DM Parameter Area
(6) Ladder program (program that includes the
new nodes)
System Configuration before Adding Nodes
CS1W-RPT01
Repeater Unit
Prepare the
nodes to be
added.
Set the Control-
ler Link settings
for the new no-
des.
Turn ON the
power to the
new nodes.
Set the DM
Area
parameters.
Turn OFF the
power to the
new nodes.
(1) Set the node address to a number that is
not being used by another node on the
network.
(2) Set the baud rate to match the settings for
the existing network and Repeater Unit.
(3) Set the terminating resistance switch: Turn
ON the terminating resistance for the nodes
at both ends of the network (segment) only.
(1) Create I/O tables
(2) Transfer user programs, etc.
Do not connect the communications cables yet.
(1) Set the polling/polled node setting to Polled.
(2) Set the Wired Network 62 Node Enable Bit to match the setting for
the existing network.
Check that the error indicators (ERC and ERH) are not lit.
(When the node address is set to 33 or higher, the ERC indicator
may turn ON. Turn ON the Wired Network 62 Node Enable Bit (to
enable 62 nodes), turn ON the power again, and check that the
ERC indicator is OFF.
System Configuration after Adding Nodes
CS1W-RPT01
Repeater Unit
The cable to the new
node is not connected.
Connect the
communications
cables.
Turn ON the
power to the
Repeater Unit.
Turn ON the
power to the
new nodes.
Return the
polling/polled node
setting in the DM Area
parameters to Polling.
Check that the PWR indicator is lit.
Join the new node to the existing network.
The node is participating in the network normally if the INS
indicator is lit and the ERC and ERH indications are not lit.
System Configuration after Adding Nodes
CS1W-RPT01
Repeater Unit
The cable to the new
node is connected.
(1) Set the baud rate to match the settings for the existing network.
(2) Set the terminating resistance switch: Turn ON the terminating resistance for
the Repeater Unit if it is at the end of the segment.
(Do not connect the communications cables yet.)